J. Planar Chromatogr. 30, 401-404 (2017). HPTLC of 35 model compounds on RP-8 with 61 chromatographic systems to determine the solvent strength of 20 solvents on_x000D_ RP-8 phase and to compare the values with a previous study on silica gel. The study showed that the RP-8 phase can behave as normal-phase adsorbent.

J. Planar Chromatogr. 2, 49-52 (1989). Luminiscence polarization of chromatographic spots of 23 DNS amino acids using a two channel scanning laser fluorometric detector. TLC of DNS amino acids on polyamide with 1.5% formic acid in water.

J. Planar Chromatogr. 3, 68-72 (1990). Development of an absolute method for the determination of molecular weight distribution (MWD) of oligomers, based on i.a. 1.) the preparation of chromatograms with continuous distribution of oligomer homologues (OH) into individual peaks in the initial part of the chromatogram, 2.) the micropreparative isolation of the first two low molecular weight OH, and the determination of their structure by high resolution NMR. The MWD of oligostyrenes was calculated from the chromatograms obtained with adsorption HPTLC.

J. Planar Chromatogr. 7, 251-253 (1994). Employment of the Kowalska model of solute retention in liquid - solid chromatography with alcohol - aliphatic hydrocarbon mixtures as binary eluents, for the investigation of the retention of azines, diazines, their dehydrocondensation products, and their methyl and sulfur derivatives. TLC on silica with propanol - hexane in various proportions.

Part II: Characteristics of the second, equilibrium stage of chromatographic separation. J. Planar Chromatogr. 10, 163-166 (1997). Study of the factors which influence the progress of a chromatographic separation provide data which enable better understanding of the process. The properties of a liquid-crystal detector have been used to display changes in the distribution of spot concentration in the second stage of the chromatographic process (in the mobile phase range Zf > 20 mm). Estimates were made of the influence on spot broadening of the type of chromatographic system, the concentration distribution at the origin, RF values, and the duration of the chromatographic process. HPTLC of diphenylamine on silica/kieselguhr with different solvents or their mixtures. The detector was made from the nematic liquid crystal hexylcyclohexylisothio-cyanphenyl.

J. Planar Chromatogr. 12, 421-424 (1999). Study of the interaction of fourteen hydrazines with Trp, Ser, Leu, Val, Gly, Phe and BSA by charge-transfer reversed-phase TLC. TLC of hydrazines on silica gel impregnated with paraffin oil 19:1 solution in n-hexane by overnight pre-development. The mobile phase was acetone- water 3:2. For the determination of the lipophilicity the mobile phase contained the chosen amino acid in different concentrations. Detection through the strong intrinsic color of the compounds.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 347-355 (2003). Discussion of a model of chromatographic process which takes into account molecular interactions in mobile phase. TLC of i.e. 2-, 3-, 4-nitroaniline, 4-nitro-2-, 2-nitro-4-, 5-nitro-2-toluidine, 2-, 3-nitrotoluene, 2-, 4-chlorophenol, 2-, 4-nitrophenol, 2,3-, 2,4-, 2,5-, 2,6-dichlorophenol, and naphthalene on silica gel with benzene - acetone, benzene - methanol, carbon tetrachloride - ethyl acetate, and toluene - isopropanol.

J. Planar Chromatogr. 21, 315-323 (2008). The role of the mobile phase in controlling selectivity for adsorption chromatography - with either thin-layer plates or columns - is reviewed and expanded. The use of different solvent mixtures of varying selectivity in normal-phase chromatography is now on a firm theoretical and practical basis. The choice of a more polar component (B-solvent) of a binary solvent mixture (A/B) largely determines relative retention and resolution. Maximum differences in selectivity are achieved by the use of two mobile phases where the B-solvent is either very polar (requiring a lower % B for desirable values of k) or relatively nonpolar (requiring a higher % B).